COWAY Air Purifiers for Large Room Whole Home Up to 4,253ft², 2 Sets of XL Washable Pre-Filters and HEPA Filters for Dual Purification, AQI, Turbo Mode, Timer, Wheels, 5yr Warranty, ProX(B) vs SHARP Air Purifier and Humidifier. Plasmacluster Ion Technology and Triple Filtration, including True HEPA Filter. Covers up to 1,650 sq. ft. for Large Rooms, for Dust, Smoke, and Pollen. KC860U
Side-by-side comparison based on Reddit community data

#8 in Air Purifiers
Coway
COWAY Air Purifiers for Large Room Whole Home Up to 4,253ft², 2 Sets of XL Washable Pre-Filters and HEPA Filters for Dual Purification, AQI, Turbo Mode, Timer, Wheels, 5yr Warranty, ProX(B)
$999.00
100/100Excellent
100% positive0% neutral0% negative
Pros
- +More effective
- +Filters smoke
- +Filters vocs
- +Carbon filter
- +Made for large spaces
“More recently, I bought a Coway Airmega ProX, which seems to be more effective for me. It’s a big filter that is made for large spaces and it filters smoke and VOCs with a carbon filter.”

#7 in Air Purifiers
Sharp
SHARP Air Purifier and Humidifier. Plasmacluster Ion Technology and Triple Filtration, including True HEPA Filter. Covers up to 1,650 sq. ft. for Large Rooms, for Dust, Smoke, and Pollen. KC860U
$567.45
100/100Excellent
100% positive0% neutral0% negative
Pros
- +Legit
- +Sold over 100 million modules
- +Generates hydroxyls
- +Might be effective in enclosed environments (e.g., fridge)
Cons
- -Minimally effective
“Sharp plasma cluster is legit. They sold over 100 million modules. It might actually be effective (minimally) inside a fridge where it's a completely enclosed environment.”